#include<stdio.h>
int main(){
	int a[2][5] = {1,2,3,4,5,6,7,8,9,10};
	int *ptr1 = (int *)(&a + 1);//对原有的行指针再次升级
	int *ptr2 = (int *)(*(a + 1));//一级指针
	printf("%d,%d\n",*(ptr1 - 1),*(ptr2 - 1));//10,5
}
